<!DOCTYPE html>  
<html>  
  <head>  
    <title>Number</title>  
  </head>
  <body>  
    <script type="text/javascript">
       var x=102;//integer value  
       var y=102.7;//floating point value  
       var z=13e4;//exponent value, output: 130000  
       var n=new Number(16);//integer value by number object  
       document.write(x+"<br>");
       document.write(y+"<br>");
       document.write(z+"<br>");
       document.write(n+"<br>");
       
       document.write(Number.MAX_VALUE+"<br>");
       document.write(Number.parseFloat(1.23)+"<br>");
       
       var a = 1.23;
       document.write(a.toFixed()+"<br>");
    </script> 
  </body>  
</html>